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avoid hard-coded dependency on backport-concurrent (SPR-6161)

This commit is contained in:
Juergen Hoeller 2009-10-13 21:37:05 +00:00
parent b4ffdcdf18
commit e2af25b891
1 changed files with 26 additions and 34 deletions
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58
org.springframework.context/src/main/java/org/springframework/scheduling/config/ExecutorBeanDefinitionParser.java
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@ -16,11 +16,10 @@
package org.springframework.scheduling.config;
import java.util.concurrent.ThreadPoolExecutor;
import org.w3c.dom.Element;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.core.JdkVersion;
@ -30,16 +29,19 @@ import org.springframework.util.StringUtils;
* Parser for the 'executor' element of the 'task' namespace.
*
* @author Mark Fisher
* @author Juergen Hoeller
* @since 3.0
*/
public class ExecutorBeanDefinitionParser extends AbstractSingleBeanDefinitionParser {
@Override
protected String getBeanClassName(Element element) {
if (this.shouldUseBackport(element)) {
if (shouldUseBackport(element)) {
return "org.springframework.scheduling.backportconcurrent.ThreadPoolTaskExecutor";
}
return "org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor";
else {
return "org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor";
}
}
@Override
@ -52,7 +54,7 @@ public class ExecutorBeanDefinitionParser extends AbstractSingleBeanDefinitionPa
if (StringUtils.hasText(queueCapacity)) {
builder.addPropertyValue("queueCapacity", queueCapacity);
}
this.configureRejectionPolicy(element, builder);
configureRejectionPolicy(element, builder);
String poolSize = element.getAttribute("pool-size");
if (!StringUtils.hasText(poolSize)) {
return;
@ -104,43 +106,33 @@ public class ExecutorBeanDefinitionParser extends AbstractSingleBeanDefinitionPa
if (!StringUtils.hasText(rejectionPolicy)) {
return;
}
Object handler = null;
boolean createBackportHandler = this.shouldUseBackport(element);
String prefix = "java.util.concurrent.ThreadPoolExecutor.";
if (builder.getRawBeanDefinition().getBeanClassName().contains("backport")) {
prefix = "edu.emory.mathcs.backport." + prefix;
}
String policyClassName;
if (rejectionPolicy.equals("ABORT")) {
if (createBackportHandler) {
handler = new edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.AbortPolicy();
}
else {
handler = new ThreadPoolExecutor.AbortPolicy();
}
policyClassName = prefix + "AbortPolicy";
}
if (rejectionPolicy.equals("CALLER_RUNS")) {
if (createBackportHandler) {
handler = new edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.CallerRunsPolicy();
}
else {
handler = new ThreadPoolExecutor.CallerRunsPolicy();
}
else if (rejectionPolicy.equals("CALLER_RUNS")) {
policyClassName = prefix + "CallerRunsPolicy";
}
if (rejectionPolicy.equals("DISCARD")) {
if (createBackportHandler) {
handler = new edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.DiscardPolicy();
}
handler = new ThreadPoolExecutor.DiscardPolicy();
else if (rejectionPolicy.equals("DISCARD")) {
policyClassName = prefix + "DiscardPolicy";
}
if (rejectionPolicy.equals("DISCARD_OLDEST")) {
if (createBackportHandler) {
handler = new edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.DiscardOldestPolicy();
}
handler = new ThreadPoolExecutor.DiscardOldestPolicy();
else if (rejectionPolicy.equals("DISCARD_OLDEST")) {
policyClassName = prefix + "DiscardOldestPolicy";
}
builder.addPropertyValue("rejectedExecutionHandler", handler);
else {
policyClassName = rejectionPolicy;
}
builder.addPropertyValue("rejectedExecutionHandler", new RootBeanDefinition(policyClassName));
}
private boolean shouldUseBackport(Element element) {
String poolSize = element.getAttribute("pool-size");
return StringUtils.hasText(poolSize) && poolSize.startsWith("0")
&& JdkVersion.getMajorJavaVersion() < JdkVersion.JAVA_16;
return (StringUtils.hasText(poolSize) && poolSize.startsWith("0") &&
JdkVersion.getMajorJavaVersion() < JdkVersion.JAVA_16);
}
}